| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a rubber hose, capable of restraining reduction in patterning performance of a steel wire for forming a reinforcing layer.SOLUTION: The reinforcing layer is formed by laminating a drawn steel wire on an inner peripheral surface of an inner surface rubber layer laminated on an outer peripheral surface of a mandrel, and a hose mold is molded by laminating an outer surface rubber layer on the outer peripheral surface of this reinforcing layer, and when manufacturing the rubber hose by vulcanizing the hose mold, a cooling storage process of storing the steel wire in a temperature range of -15°C to 15°C is arranged up to forming the reinforcing layer from just after manufacturing the steel wire by drawing a steel wire base material, so that the steel wire is easily wound when forming the reinforcing layer by delaying age hardening of the steel wire. |
